This reference book provides updated knowledge on fundamentals and applications of aptasensorsin food science. It discusses aptamer selection strategies including Systematic Evolution of Ligandsthrough EXponential enrichment (SELEX), Capture SELEX, Cell SELEX, and GO SELEX strategiesfor aptasensor design involving well-studied and newly emerged nanomaterials, food analysisfocusing on its safety, aptasensing techniques relevant to detection of food pathogens, pesticides, veterinary drug residues, toxins, heavy metals, allergens, and future perspectives of aptamers infood science and technology. The book focuses on recent developments in aptasensors and their usein detection of contaminants in food. The book is an excellent resource for R&D organizationsdedicated to the development of biosensors in general and aptasensors in particular for the detectionof environmental contaminants in the food supply chain. Also, the contents of the book willbe useful to researchers, postgraduate students, analytical chemists, food scientists, and regulatoryauthorities.